Make deprecated functions work. See #14651

git-svn-id: http://svn.automattic.com/wordpress/trunk@15517 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/admin.php

@@ -39,6 +39,9 @@ require_once(ABSPATH . 'wp-admin/includes/taxonomy.php');
 /** WordPress Template Administration API */
 require_once(ABSPATH . 'wp-admin/includes/template.php');
 
+/** WordPress List Table Administration API */
+require_once(ABSPATH . 'wp-admin/includes/list-table.php');
+
 /** WordPress Theme Administration API */
 require_once(ABSPATH . 'wp-admin/includes/theme.php');
 

wp-admin/includes/default-list-tables.php

@@ -1,7 +1,5 @@
 <?php
 
-require_once('list-table.php');
-
 /**
  * List table classes
  *

wp-admin/includes/deprecated.php

@@ -203,9 +203,42 @@ function use_codepress() {
  * @since 2.7.0
  * @deprecated 3.1.0
  * @deprecated Use WP_List_Table
+ *
+ * @param string $screen The handle for the screen to add help to. This is usually the hook name returned by the add_*_page() functions.
+ * @param array $columns An array of columns with column IDs as the keys and translated column names as the values
+ * @see get_column_headers(), print_column_headers(), get_hidden_columns()
  */
-function register_column_headers() {
+function register_column_headers($screen, $columns) {
 	_deprecated_function( __FUNCTION__, '3.1', 'WP_List_Table' );
+
+	global $_wp_column_headers;
+
+	if ( is_string($screen) )
+		$screen = convert_to_screen($screen);
+
+	if ( !isset($_wp_column_headers) )
+		$_wp_column_headers = array();
+
+	$_wp_column_headers[$screen->id] = $columns;
+}
+
+/**
+ * Get the column headers for a screen
+ *
+ * @since 2.7.0
+ * @deprecated 3.1.0
+ * @deprecated Use WP_List_Table
+ *
+ * @param string|object $screen The screen you want the headers for
+ * @return array Containing the headers in the format id => UI String
+ */
+function get_column_headers($screen) {
+	_deprecated_function( __FUNCTION__, '3.1', 'WP_List_Table' );
+
+	$table = new _WP_List_Table_Compat($screen);
+	list( $columns ) = $table->get_column_headers();
+
+	return $columns;
 }
 
 /**
@@ -215,19 +248,49 @@ function register_column_headers() {
  * @deprecated 3.1.0
  * @deprecated Use WP_List_Table
  */
-function print_column_headers() {
+function print_column_headers($screen, $id = true) {
 	_deprecated_function( __FUNCTION__, '3.1', 'WP_List_Table' );
+
+	$table = new _WP_List_Table_Compat($screen);
+
+	$table->print_column_headers($id);
 }
 
 /**
  * Gets hidden column names for a particular screen.
  *
- * @since unknown
+ * @since 2.7.0
  * @deprecated 3.1.0
  * @deprecated Use WP_List_Table
+ *
+ * @param string $screen
+ * @return array
  */
-function get_hidden_columns() {
+function get_hidden_columns($screen) {
 	_deprecated_function( __FUNCTION__, '3.1', 'WP_List_Table' );
-	return array();
+
+	$table = new _WP_List_Table_Compat($screen);
+
+	return $table->get_hidden_columns();
+}
+
+// Helper class to be used only by deprecated functions
+class _WP_List_Table_Compat extends WP_List_Table {
+
+	function _WP_List_Table_Compat( $screen) {
+		parent::WP_List_Table( array(
+			'screen' => $screen,
+			'ajax' => false
+		) );
+	}
+
+	function get_columns() {
+		global $_wp_column_headers;
+
+		if ( isset($_wp_column_headers[$this->_screen->id]) )
+			return $_wp_column_headers[$this->_screen->id];
+
+		return array();	
+	}
 }
 

wp-admin/includes/list-table.php

@@ -458,6 +458,8 @@ class WP_List_Table {
 	 *
 	 * @since 3.1.0
 	 * @access protected
+	 *
+	 * @param bool $with_id Wether to set the id attribute or not
 	 */
 	function print_column_headers( $with_id = true ) {
 		$screen = $this->_screen;